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F. WENDLING. COOLING SYSTEM FOR INTERNAL COMBUSTION MOTORS. APPLICATION FILED APR.14, 1921.

1,433,440. r V Patented Oct. 24, 1922.

I IVVEIVTOR FEED. WE/VDL/IVG ATTORNEYS 1 a l Patented he. 24., 195:2. i,a....,4;4a

FREDERICK WENDLING, OF EDIMONTON, ALBERTA, CANADA.

COOLING SYSTEM. FOR INTERNAL-GOMBUSTION MOTORS.

Application filed April 14, 1921. Serial No. 461,343.

To all whom it may concern: vehicle chassis showing the general location Be it known that I, Fnnnnnron WVnNnLiNG, and arrangement of the parts comprising 55 a citizen of the United States, and a resident the present invention; 7 of Edmonton, in the Province of Alberta, Fig. 2 is a side elevational view thereof' 6 Dominion of Canada, have invented new Fig. 3 is a detail sectional view taken oii and Improved Cooling Systems for Interthe line 33 of Fig. 1; nal-Combustion Motors, of which the Fig. 4 is a vertical sectional view taken on 60 f lowing'is a full, clear, and exact descripthe line 4-4 of Fig. 1. tion, Referring more particularly to the draw- The present invention relates to new and ings, the reference character 5 designates the useful improvements in cooling systems for motor of the vehicle, and said motor is coninternal combustion motors, and it pertains structed with the usual water-jacketed more particularly to cooling systems for the spaces. The reference character 6 designates motors of motor, vehicles and the like. The the radiator and the water-jacketed spaces of liquid of these cooling systems is subjected the motor are connected to the radiator by to radiating surfaces in order that the temmeans of a pipe 7 or the like leadingfrom perature thereof may not rise to too high the top of the cylinders to the radiator. 70 a degree. In low temperatures this cooling The reference character 8 designates the liquid has been compounded with, volatile usual overflow pipe of the radiator and liquids such, for example, as alcohol, glycinstead of having the lower end of said overerine, or the like, in order to lower the freezflow pipe open, as is the common practice, ing point thereof. When the use of these a rearwardly-extending pipe 9 is secured to 75 volatile liquids is restored to, under operthe lower end thereof as indicated by-the ating conditions of the motor, the volatile reference character 10. The rear end of liquids are more readily evaporated than the rearwardly-extending pipe 9. is connectthe main body of the cooling fluid and pass ed to a condensing coil or the like 12, said off in vapor, consequently weakening the condensing coil terminating in a fitting 13. 80 cooling fluid. This fitting 13 is secured in the upper wall It is the primary object of this invention of the tank 14 suitably secured to the chassis to devise means whereby the liquid condenof the vehicle. Leading from the lower porsation due to the evaporation of the volatile tion of; the tank 14, is a pipe 15. and said liquids when used in connection with the pipe15 extends forwardly and into a recep- 85 cooling fluid of a motor vehicle may be retacle 16 carried by the dash, instrument covered. board or other suitable portion of the vehicle It is a further object of the invention to adjacent the operators seat. The tank 14 provide means whereby this liquid of conis formed with a fitting 17, and said fitting densa'tion may be returned to the cooling has two passages 18 and 19. The passage 90 system of the motor. 18 is controlled by means of an inwardly- It is a further object of the invention to opening check valve 20, and the passage 19 provide automatically operated means for is controlled by an outwardly opening check returning the liquid of condensation to the valve 21. By means of the inwardly-opencooling system of the motor. ing check valve 20, air is permitted to enter 95 It is a still further object of the invention the tank 14 for a purpose to be hereinafter to provide a means which in addition to described, while the provision of the out 1naintainingthe liquid level in the cooling vwardly-opening check valve 21 permits of system, will. supply the 'motor with moisanescape of gas pressures should they detened air at a point in the intake manifold 'velop in the tank 14. 100 between the carbureter and the motor, great- The receptacle 16 is shown in detailun ly increasing'tlie eflicien'cy of the motor. Fig. 4 andsaid receptacle has an outlet pipe \Vith the above and other objects in view, 22 controlled by an outwardly opening check reference is had to the accompanying drawvalve 23. The :reference character 24 desings, in whichignates guide rods mounted internally of 105,

Figure l is a top plan view of a motor I receptacle 16, and slidably mounted upon said guide rods is a Float 25. Projecting front the upper face 01 the float is a needle valve 26, and said valve 26 co-acts with. a seat 27 formed in a housing The reference character 29 represents a pipe leading ii'roin the housing 28 to the manifold 30 01 the motor, whereby the air pressure in the tank 16 is reduced at certain intervals to he hereinafter described. The reference character designates avalve of the needle type, and said valve is manually operated in order that certain. amount of air may be admitted to the receptacle 1.6 through a pipe 36, this valve serving to relieve the vacuum in the tank 16 under certain conditions. The pipe 15 leading from the rear tank 14 is connected at its forward. end to the top wall of the receptacle as indicated by the referonce character 37 in Fig. 4.

The pipe 22 heretofore mentioned and connected to the loweror bottom wall of the receptacle 16, leads to the water jacket of the motor 5, as indicated by the reference character 33, in order that the liquid contained within a the receptacle 16 may be drained directly into the Water jacketed spaces of the motor 5. Y

The device operates in the following manner: Assuming that the water cooling system of the motor 5 including. the radiator 6 is filled with a coolingliquid with which is combined volatile liquids, such, for example,

as alcohol, glycerine, or the like, and the operation of the motor has been started. The heat generated in the motor causes a vaporization of the volatile oils and in the ordinary course of events, the vapor arising from the liquidlevel in the radiator 6, would escape through the overflow pipe 8 and be lost to the atmosphere. 'In the present instance, however, this vapor is conveyed by means of the pipe 9 to the condensing coil 12, from. whence after condensation, it is conveyed to the rear tank 14. As this evaporation of the volatile fluids takes place, the

- level in the radiator naturally falls.

From Fig. 2 it will be seen that the tank or receptacle 16 is so'positioned with respect to the radiator that the level of liquid in the radiator will coincide with that in the tank 16. Assuming now that the liquid level in the radiator 6 and in the tank 16 fails (it being understood that the level in the tank 16 falls by reason of the pipe 22, which. leads to the water-jacketed space of the motor 5,) the float 25 in. the tank 16 will also fall. As the float 25 in the tank 16 falls, the'valve 26 disengages its seat in the housing '28 and permits of the intake manifold '30 exhaustmg the air in the top of the tank 1.6 to :forma vacuum therein. of the vacuum inthe tank 16, the fluid con tained in the tank 14: will be discharged 'by- 'means ofth p pe 1 t he tank 16} until the Host thetem to afheigdit sufiicient' Upon formation By adjusting the needle valve in such a manner that the same is always slightly open permitting the passage of a very small volume of air into the receptacle 16, the vacuum created in the upper portion of said receptacle 16 will be relieved if for any reason the valve 27 shouldnot properly seat. Owing to the pipe 36 extending below the liquid. level in the tank 16, the air admitted to said. tank through the valve 35, necessarily passes in. the presence of the liquid in the tank 16 and picks up a certain amount of moisture which is carried with the air and introduced to the explosive charge at the point of connection of thepipe 29 with the intake manifold, thus adding to the combustible charge, air laden with moisture, which greatly increases the motors efliciency.

From the foregoingit will be noted that the present invention provides means whereby the more volatile'liquids of the cooling fluid of an internal combustion motor may not only be saved, but may be returned automatically to the cooling fluid.

I claim-- I 1. A device for collectin the vapors-of fluids in internal combustion motor cooling systems comprising a motor, a radiator,

an overflow pipe for said radiator, a condenser, a pipe connecting'said condenser with said overflow pipe whereby the vapors are conducted through the overflow pipe and said connecting pipe to the. condenser, a

tank connected with said condenser, a pipe connectingthe pipe with the condenser, an. auxiliary tank, a pipe connecting the auxiliary with the first-mentioned tank, means connecting the auxiliary tank with the intake manifoldot' the motor to provide a vacuum in the auxiliary tank, a pipe connecting the auxiliary tank with the water" jacket of the motor whereby the contents of the auxiliary tank may be periodically discharged I the combination with a motor, aradiator, a

condenser connected with the overflow of the ra ia o tank nnected, with the oom densen'anjeuxiliary tank connected Withtl18 first tank and positioned with respect to the radiator so that the level of the liquid in the radiator Will coincide With that in the tank a connection between the top of the auxiliary tank and the manifold of the motor, a float controlled valve in the auxiliary tank and controlling the connection between the tank and manifold, a connection between the bottom of the auxiliary tank and the Water acket of the motor, and an outwardly 10 opening valve at the junction of said connection with the tank.

FREDERICK WENDLING. 

